390 results about "Porous channel" patented technology

The invention relates to a method of mass preparation of orderly mesoporous macromolecule, carbon material and composite material, belonging to the technical field of the macromolecule and nanometer material. With polyurethane sponge as frame, nonionic surface-active material as structural guide, macromolecule precursor as carbon source and inorganic silicon source and other materials as addition agent, through hot polymerization and carburetion, mesoporous macromolecule with orderly continuous mesoporous porous channel, high specific surface area and large hole volume, carbon material and composite material are prepared in large quantity. The method of mass preparation of orderly mesoporous macromolecule, carbon material and composite material has the advantages of low cost, time and labor saving, easy recovery of products, thus facilitating industrial production.

The invention belongs to the technical field of a lithium secondary battery, and particularly relates to a porous copper current collector, capable of retraining generation of lithium dendrites, of the metal lithium secondary battery. The porous copper current collector has a connected porous channel structure, and the pore diameter is 0.1-2[mu]m. Compared with the prior art, the three-dimensional porous structure can lower the effective current density of the electrode by enlarging the specific surface area of the electrode so as to restrain the generation of lithium dendrites and to stabilize the SEI film; in addition, the three-dimensional porous structure can accommodate the deposited lithium metal so as to slow down the volume change of the lithium metal negative electrode in the charging-discharging cyclic process; and therefore, when the three-dimensional porous copper current collector is applied to the negative electrode of the metal lithium secondary battery, the coulombic efficiency, the circulating stability and the safety of the battery can be effectively improved in the cyclic process.

The invention provides a catalyst for synthesizing a nanometer molecular sieve of para-xylene and a method for preparing the same, and mainly overcomes the defects of poor stability and low selectivity on para-xylene in the prior catalyst. In the method, the nanometer molecular sieve as a mother substance, silicon, phosphorus, magnesium and mixed rare earth are modified so as to adjust acid performance and porous channel structure of the catalyst and improve the selectivity of the catalyst, and the metals with hydrogenation function such as noble metals of platinum, palladium, ruthenium, rhodium, iridium, osmium, and the like or transition metals of iron, cobalt, nickel, and the like are modified so as to inhibit the deactivation of carbon accumulation of the catalyst and greatly improve the stability of the catalyst.

The invention discloses graphene aerogel microspheres and a preparation method and application thereof. The preparation method is characterized in that 1, graphite oxide is prepared; 2, graphene oxide aqueous dispersion is prepared; 3, the graphene oxide aqueous dispersion is atomized through a spraying method into graphene oxide liquid drop microspheres, and meanwhile the microspheres are collected through receiving liquid in a cooling bath; 4, the receiving liquid is filtered to obtain graphene oxide ice microspheres, and then freeze drying is performed on the microspheres to obtain graphene oxide aerogel microspheres; 5, the graphene oxide aerogel microspheres are subjected to thermal reduction to obtain the graphene aerogel microspheres. The preparation method is simple and convenient to implement, no environmental pollution is generated, and the obtained graphene aerogel microspheres are uniform in size and large in specific area, are of a stable center-divergence multi-porous-channel network structure and are used for adsorbing environmental pollutants.

The invention relates to an organic wastewater treatment film reactor utilizing solar energy photo-assisted electro-catalysis, which comprises a storage tank of water to be processed, a flow controllable constant flow pump, a photoelectric chemical reactor, a clear water storage tank and a solar battery component, wherein a photo anode and a cathode are correspondingly arranged in the reactor; the photo anode takes a porous metal membrane as a base body, and a TiO2 nano tube or a TiO2 mesoporous membrane is formed on the surface of a porous titanium membrane (net) by an electrochemical anisotropic etching technology; a porous channel film is used as the base body; a metal oxide coating electrode with high electrochemical catalytic activity and high electrical conductivity is prepared by a dipping film-forming method, simultaneously, by doping and modifying operations, the electrode material has photo catalytic activity and the reaction efficiency is improved. The reactor integrates electrochemistry, photocatalysis and film separation technologies; the three technologies are coupled to enhance a synergistic effect; the wastewater treatment efficiency can be improved; a solar component is adopted as a power supply; the clean solar energy is utilized to the maximal degree, and the organic wastewater treatment film reactor has social benefits of reducing environment load and economic benefits of reducing cost.

The invention provides a method for preparing multi-level porous channel beta zeolite, and belongs to the technical field of preparation and application of the zeolite. The method is characterized in that: carbon grains which are generated under restriction of the sequent meso-porous channels are taken as a hard mold board, and added with a small molecular organic ammonium soft mold board to convert the meso-porous silicon-aluminum coating the carbon grain into the meso-porous beta zeolite in situ, and the meso-porous beta zeolite is calcined to remove the soft and hard mold boards so as to obtain the multi-level porous channel containing beta zeolite. Compared with the zeolite obtained by directly taking the meso-porous carbon as the mold board, the multi-level porous channel beta zeolite synthesized by the method does not need to remove the meso-porous silicon-aluminum first and then introduce the silicon-aluminum species synthesizing the zeolite, thereby reducing complicated working procedures as well as saving raw materials. The method has the advantages of greatly lowering diffusional resistance, reducing secondary reaction, and having better catalytic property and huge potential application values in fields such as petrochemical industry, fine chemical industry, and the like.

The invention relates to a method of preparing three-dimensionally ordered macroporous chelate resin which has a hydrophilic-structure framework and can absorb precious metal irons in aqueous solution, belonging to the field of the chelate resin. The method of preparing the three-dimensionally ordered macroporous chelate resin comprises the following steps: (1) preparing 80-1000nm silica colloidal crystal template; (2) preparing three-dimensionally ordered Poly(N-vinylformamide) or poly(n-vinylacetamide) macroporous material; and (3) preparing hydrophilic three-dimensionally ordered macroporous chelate resin. Compared with the traditional macroporous or gel-type polyvinylamine resin, the novel three-dimensionally ordered macroporous chelate resin prepared with the method has the advantages that the regularly-arranged porous channel system has small diffusion resistance, which is good for the metal irons enter the absorption center from all directions. In addition, the novel three-dimensionally ordered macroporous chelate resin is easy to synthesize, has stable performance, good hydrophilic performance and high selectivity, contains many functional groups, can absorb a large number of metal irons and has better development and utilization values in the aspect of avoiding heavy metal pollution and protecting the environmental water.

The invention discloses a local prestress assembly type energy-dissipating beam column joint. The beam column joint comprises a precast concrete column, a precast concrete beam, replaceable energy-dissipating bars, prestress ribs and an anchor. Prestress rib porous channels and brackets are reserved in a joint area of the precast concrete column. The precast concrete beam is a pre-tensioned prestress beam, a prestress rib porous channel is formed in the middle of the section of the beam end, and a rabbet is formed in the lower part of the beam end. The precast concrete beam is placed on the brackets and is fixed through local post-tensioned prestress ribs in a pressure welding mode, and concrete is poured on the upper surface of the precast concrete beam in a cast-in-place mode at floor height. The replaceable energy-dissipating bars are installed on the upper surface and the lower surface of the precast concrete beam, and the number, the specification and action time of the replaceable energy-dissipating bars are designed according to different seismic levels. When located on the lower surface of the precast concrete beam, the replaceable energy-dissipating bars penetrate through reserved holes in the brackets, and exposed parts are wrapped with mortar. The local prestress assembly type energy-dissipating beam column joint improves restorability of a precast concrete framework under earthquakes, energy dissipation capacity is enhanced, hierarchical shock absorption and energy dissipation are achieved, and post-seismic reparation is facilitated.

The invention relates to a modified nano-drilling fluid treating agent for restraining mud shale expansion in petroleum and natural gas drilling. The treating agent can form a dense mud cake at the mouth of an underground porous channel so as to effectively protect a well wall. The technical scheme is that: the treating agent comprises the following raw materials by gram: 5 to 10 g of nano-SiO2, 8 g of acrylamide, 0.8 g of silane coupling agent KH-550, 0.2 g of ammonium persulfate, 300 g of toluene and 500 g of distilled water, wherein nano-SiO2 has the density of 2.33, the specific surface area of 150m<2> / g and the particle size of 20 to 40 nm; and the acrylamide has the molecular weight of 71.08. The silane coupling agent is grafted on the nano-SiO2 by using the silane coupling agent and the acrylamide is grafted and polymerized to form long-chain grafted nano-SiO2 which is called as modified nano-SiO2; and nano-SiO2 particles are uniformly and stably dispersed in the drilling fluid to form the modified nano-drilling fluid. The treating agent has the advantages of higher mud cake quality, thinner mud cake, good toughness, capability of remarkably reducing filtration loss and remarkable mud shale expansion preventing effect, and is used as the treating agent in the field of drilling.

The invention discloses an assembly integral type concrete frame structure of dry-wet mixed connection of nodes and a construction method. The assembly integral type concrete frame structure comprises pre-fabricated concrete pillars, pre-fabricated concrete beams, node local pre-stressed tendons, pre-fabricated concrete plates and rear-poured concrete combined interface layers; in an installation construction stage of a structural system, pre-fabricated components of the beams and the pillars adopt local pre-stress exerting and are connected in a dry mode, step-shaped rabbets at the ends of the pre-fabricated concrete beams are stored on side brackets of the pre-fabricated concrete pillars, and the pre-stressed tendons are inserted into vertical cross arc-shaped porous channels reserved in the beam ends and the node pillar sections of the pre-fabricated concrete pillars and are stretched; after dry-type connection between the pre-fabricated concrete beams and the pre-fabricated concrete pillars is completed, and the structural bearing capacity is achieved; in a using stage, after the pre-fabricated concrete plates or steel bearing plates, the pre-fabricated beams and steel rebars on the upper portions of the pre-fabricated plates are installed, the concrete combined interface layers are poured, and wet-type connection among the pre-fabricated concrete pillars, the pre-fabricated concrete beams and the pre-fabricated concrete plates is completed; and through dry-and-wet-type mixed connection of the nodes, the assembly integral type concrete frame structure is formed.

The invention relates to an individuation minimal invasive vertebral pedicle screw entering navigation template and a preparation method of the navigation template. The preparation method of the navigation template includes: reconstituting a three-dimensional model of a target vertebra based on a medical image; conducting the screw entering porous channel virtual analysis design on the three-dimensional model and defining a screw entering porous channel; taking feature points from the three-dimensional model, designing a vertebral pedicle screw entering navigation template prototype and obtaining a navigation template which fully fits for the vertebral body through the Boolean calculation; and manufacturing the navigation template through 3D printing and other processing methods. The individuation minimal invasive vertebral pedicle screw entering navigation template closely fits for the mastoid process and the lamina arcus vertebrae, is high in stability, ensures accurate implanting of the vertebral pedicle screw, avoids direct contact with the spinous process, reduces peeling of the muscle ligament, realizes minimal invasion, is applicable to various situations such as the vertebral distortion and slipping and the rupture of the vertebral pedicle, prevents slipping and distortion during screw entering due to the arrangement of a finger pressing board, and is convenient to operate and low in the requirement for doctors, degreases the operation risk, improves the operation efficiency and reduces the operation cost further.

The invention provides a preparation method of an orderly porous matrix shaping composite phase change material, and belongs to the field of a composite phase change material. The preparation method comprises the following steps: firstly preparing an orderly mesoporous silica carrier, and designing, adjusting and controlling the porous-channel structure, pore size and surface property of the carrier; secondly, using a phase change core material for preparing corresponding liquor, dispersing the prepared porous carrier in prepared phase change core material liquor, adsorbing the phase change core material by using the relatively strong capillary action, surface tension and the like of the porous carrier material so as to realize the high-efficiency filling of the core material in combination of the bonding effects of functional groups on the surface of the carrier on the core material, and drying so as to obtain the composite phase change material with relatively good heat storage capacity and relatively high stability. The composite phase change material has the advantages that the carrier is large in specific surface area, high in porosity and small in pore diameter, has orderly porous-channels and strong immobilization capacity on the phase change core material and is difficult to leak, the filling quantity of the core material is large, and the composite phase change material is high in energy storage density, good in heat stability, widely applied, difficult to burn, green and safe in use.

The invention relates to an ordered nanostructure sulphur / mesoporous carbon composite material for anode of a lithium ion battery; the composite material is formed by taking the ordered carbon-based mesoporous material as a carrier and loading nanometer sulphur in porous channels; the composite material is sulphur-mesoporous carbon composite material which has high sulphur content, good dispersibility, high capacity and good stability, thereby overcoming the disadvantages of electricity-conducting material, finding good carrier material for the lithium-sulphur batteries and opening up new application field for the mesoporous material; the method in the invention has the advantages of low preparation process and low cost.

The invention discloses a method for preparing a meso-porous silicon nano medicine carrier with cell specificity target, reduction responsiveness and triple anticancer treatment effects. The method comprises the following steps: firstly, synthesizing meso-porous silicon nano particles by using a gel dissolution method, subsequently, introducing a disulfide bond onto the surface of a meso-porous silicon nano reservoir by using a chemical modification method, innovatively fixing cytochrome C with an apoptosis-inducing function onto the surface of the meso-porous silicon nano reservoir, blocking meso-porous channels with medicines, finally modifying DNA (Deoxyribose Nucleic Acid) aptamer single chain molecules (AS1411, with a cancer cell apoptosis-inducing function) onto the surface of a meso-porous silicon / cytochrome C nano composite system, and taking the system as specificity ligand of a receptor (nucleolin protein) which is overexpressed on the surface of liver cancer cytomembrane, thereby establishing a multifunctional composite type nano medicine carrier system for achieving triple anticancer treatment under combined action of medicines, blocking substances and target molecules inside meso-pores.

The invention relates to a method for recovery of contaminated groundwater through in situ enhanced aeration, which comprises the following steps: digging more than one surfactant injection well, an aeration well and an extraction well in an area with the groundwater contaminated, injecting surfactant into the area with the groundwater contaminated through the surfactant injection well to dissolve the surfactant into the groundwater so as to form surface tension in the area with the groundwater contaminated, starting the extraction pump to pump an aeration zone into negative pressure, and starting the aeration pump for continuous aeration. The invention effectively solves the problem that the majority of pollutants can be removed only after flowing into the porous channel through diffusion due to the narrow porous channel near the aeration well, and improves the saturation degree of the air in the groundwater, thereby increasing opportunities of exposure the pollutants to the air. Tests show that, when the aeration rate is 100ml / min, the surface tension is reduced to 50.4dyn / cm from 70.5dyn / cm, the half-life for removal of the pollutant chlorobenzene is reduced to 16min from 31min, and simultaneously the trailing concentration is reduce to 5.1mg / L from 22.08mg / L. The removal rate can be increased to 98.5 percent from 89.2 percent after 420 minutes. The invention has the advantages of simple process, low cost, low surfactant injection and less impact on the environment.

The invention discloses a catalyst using an SBA-16 molecular sieve as a carrier, and a preparation method and application thereof. The catalyst is prepared by using a mesoporous SBA-16 molecular sieve with cage structures as the carrier, and is a cobalt-based catalyst for Fischer-Tropsch synthesis. The catalyst contains 10-45 wt% of element cobalt and 0-20.5 wt% of assistant metallic element. The catalyst disclosed by the invention has a three-dimensional porous channel system, has the advantages of high specific area, high cobalt loading capacity, high reaction activity, high hydrothermal stability, high selectivity for heavy hydrocarbons, and the like, and is hopeful to be used for Fischer-Tropsch synthesis reaction.

The invention discloses an external prestressing corrugated steel web T-shaped beam and a construction method. The T-shaped beam comprises a concrete top plate, a concrete bottom plate, end cross beams, a corrugated steel web, shear connectors and external prestressing cables. The concrete top plate and the concrete bottom plate are connected with the corrugated steel web through the shear connectors to form a T-shaped beam section. The end cross beams are arranged at the two ends of the T-shaped beam and connected with the concrete top plate, the concrete bottom plate and the corrugated steel web. The external prestressing cables are steered at the break angle through steering devices and anchored to the end cross beams. The external prestressing corrugated steel web T-shaped beam has the advantages of stress performance, the material utilization rate and durability of a common corrugated steel web T-shaped beam, structural stress is optimized, the member structure is simplified, the amount of adopted prestressed reinforcement is reduced, and manufacturing cost is reduced; the problems that during internal prestressing construction, stretch-draw porous channels are blocked, and grouting is not compact after stretching and drawing are carried out are solved, the construction quality is ensured, and the bridge structure can be maintained and reinforced easily during the later stage.

The invention provides a novel CO2 adsorbent and a method for preparing the same. The novel CO2 adsorbent is a mesoporous material modified by an amino group. The method for preparing the novel CO2 adsorbent comprises that: the grafting method is adopted; the pre-synthesized mesoporous material is pretreated, added to a solvent, evenly stirred at the room temperature and added with amino organosilane dropwise and stirred, and the obtained mixed solution is slowly heated up to a temperature of between 30 and 90 DEG C and kept warm for 10 and 20 hours; and after sucking filtration, the obtained solid product is activated in a vacuum oven at a temperature of between 80 and 150 DEG C for more than 10 hours. Due to the amino functional group modification on the surfaces of porous channels of the mesoporous material, the acidity-alkalinity of the surface is changed, thereby providing an adsorption activity center for the acidic gas CO2 and obviously improving the adsorption efficiency of CO2.

The invention discloses a high-strength and hydrophilic polysulfone hollow fibre ultrafiltration membrane, belonging to the technical field of membranes. The invention is characterized in that: complex reaction between a soluble polymer and inorganic ions is utilized to improve the hydrophilicity of the membrane by adding a water-soluble polymer of metallic compound complex into a polysulfone material; the strength of the membrane is improved by preparing a hollow fibre membrane with spinning equipment, especially adopting a porous spinning jet to prepare a porous hollow fibre membrane which has a plurality of mutual-supporting porous channels; and the spinnability of the casting solution is improved by adding an auxiliary additive to produce a series of hollow fibre ultrafiltration membranes with different molecular weight cut-off (MWCO)s, satisfying various demands and having wide application scope. The preparing technology of the invention is simple to carry out industrialization production, thereby having good application prospect. The preparing technology of the invention is simple to carry out industrialization production, thereby having good application prospect.

An automotive exhaust gas noise attenuating device which treats exhaust gas emissions, the device having (a) a ceramic substrate for passing an automotive exhaust stream therethrough, the substrate having (i) an inlet face and an outlet face with a plurality of aligned thin porous channel walls defining channels extending between the faces, and (ii) a three dimensional aspect relationship where depth of the substrate between said faces is generally the same as either the height of width of a face, the substrate having first alternates of the channels blocked at the outlet face and second alternates of the channels blocked at the inlet face to promote lateral flow through the porous walls between each first channel and a multiple of second alternate channels while permitting laminar flow within such channels; (b) hollow shell pellets packed into and trapped in at least some of the first alternate channels which cooperate to define porous Darcy flow surfaces therein; and (c) dolomitic carbonate and catalyzing material on or in the surfaces of the channel walls and Darcy flow surfaces.

The invention discloses a silk fibroin base integrated osteochondral two-layer bracket, preparation and application thereof. The preparation of the silk fibroin base integrated osteochondral two-layer bracket is carried out by the following steps of: respectively soaking parts of 1 / 2-3 / 4 height of a three-dimensional silk fibroin bracket in a calcium chloride ethanol solution, absolute ethyl alcohol, a dipotassium phosphate aqueous solution and de-ionized water; repeating the above operation for 1-15 times, taking the silk fibroin bracket finally soaked by the de-ionized water to soak in the calcium chloride ethanol solution for 5-30 min and subsequently using the de-ionized water to soak the silk fibroin bracket for 3-10 min and pre-calcify the three-dimensional silk fibroin bracket; then soaking the pre-calcified part of the three-dimensional silk fibroin bracket in a bionic calcium ion buffer solution and culturing for 4-8 days at a constant temperature of 37 DEG C to obtain the silk fibroin base integrated osteochondral two-layer bracket. In the pre-calcification process of the invention, the silk fibroin bracket can obtain a nucleating locus of hydroxyapatite crystals; and evenly dispersed weak crystallization nano hydroxyapatites are formed on the surfaces of the porous channels of the bracket by culturing the bracket in the bionic calcium ion buffer solution.

The invention relates to a method for synthesizing 3-methyl-3-butylene-1-alcohol on a solid acid catalyst and belongs to the field of catalytic synthesis. According to the method, by the solid acid catalyst, SnCl2 is immobilized on Al2O3, SiO2 and Al2O3-SiO2 compound oxides, which have a porous channel structure and hydroxyl groups on the surface, or silicon-aluminum molecular sieves, and isobutene and formaldehyde serving as raw materials are reacted to synthesize 3-methyl-3-butylene-1-alcohol. The catalytic synthesis is conducted in a solid-gas reactor, the catalyst is the SnCl2 immobilized catalyst, the reaction temperature is between 120 and 300 DEG C, and the reaction pressure is the normal pressure. The method solves the problem that acid catalysts erode equipment and contaminate environment in the conventional production process; and the method also solves the problem of requirement on high reaction temperature and high reaction pressure during use of the conventional alkali catalysts.

The invention discloses a manganese-based metal organic framework compound-coated lithium ion battery ternary positive electrode material. Based on the self-assembling performance of an MOFs material,coating of a spherical ternary positive electrode material is realized through a simple one-step method; the positive electrode material has a layered structure, is free of impurity phase, and structural changing of the material is not caused by coating; and the positive electrode material has a two-stage spherical-like structure formed by sheet-rod-like small particles in an clustering manner. The preparation method comprises the steps of 1) preparation of a precursor; 2) preparation of a spherical ternary positive electrode material; and 3) preparation of the manganese-based metal organic framework compound-coated ternary positive electrode material. According to the application as the battery positive electrode material, the discharge specific capacity is 160-180mAh g<-1> after 50 cycles of constant current charging and discharging at 0.5C; and the discharge specific capacity is 140-160mAh g<-1> at high rate of 10C. The positive electrode material has the advantages of providing porous channels, improving wetting degree, improving cycling stability and high-rate cycle performance, reinforcing stability of M-O bond energy, low cost, simple operation and suitability of large-scale production.

The invention relates to dual-targeting ursolic acid (UA) / siRNA loaded fluorescent mesoporous silica dioxide-hyaluronic acid and application. The technical scheme of the invention lies in that 1, fluorescently-labeled mesoporous silica dioxide nano particles are synthesized through the template method; 2, the surface of FMSN is subjected to amino modification through 3-aminopropyltriethoxysilane; 3, ursolic acid (UA) and siRNA are jointly loaded into porous channels of the nano particles; 4, hyaluronic acid is loaded into the outer surfaces of the nano material in a wrapping manner through electrostatic absorption, so as to obtain the dual-targeting ursolic acid (UA) / siRNA loaded fluorescent mesoporous silica dioxide-hyaluronic acid nano particles. According to the dual-targeting ursolic acid (UA) / siRNA loaded fluorescent mesoporous silica dioxide-hyaluronic acid and application, the prepared nano material is uniform in particle size distribution, and good in dispersibility, the stability of siRNA can be improved, and besides, siRNA can further specifically target tumor cell surface adhesion molecules like ICAM and CD44, therefore the anti-tumor effect of drugs can be greatly improved, and the toxic and side effect of the drugs can be further reduced.

The invention relates to an intelligent electric heating drier. A hot air circulation assembly comprises two groups of porous plates and porous air ventilating assemblies, wherein each porous air ventilating assembly comprises a first fixing plate, a first oblique guide plate and a first vertical guide plate, one ends of the first fixing plate and the first oblique guide plate are fixedly arranged on a first porous plate and are positioned at two sides of a row of hot air inlets, the first fixing plate and the first oblique guide plate are fixedly connected with the first vertical guide plate, the first oblique guide plate is obliquely arranged and is provided with multiple first oblique air vents, and the first vertical guide plate is provided with multiple first vertical air vents. A hot air channel is formed between the porous plates and the inner wall, cold air can enter into the porous channels at two sides to flow from top to bottom after being heated and can enter into a drying room through multiple rows of the hot air inlets for heating, hot air can be uniformly distributed to each layer with the same air flow rate, the baking effect for a product of the drier is effectively increased, and the problem that the drying temperature of the traditional agricultural and sideline product drying device is uneven is solved.

The invention discloses a stretch-electricity combinational stimulation cell culture device. The device comprises a cell culture box, a cell culture cavity fixing frame, a cell culture cavity, a stepper motor and a signal generator, wherein the culture box is provided with a porous channel communicated with outside; the cell culture cavity is fixed in the cell culture cavity fixing frame; the cell culture cavity comprises a fixed threaded rod, a groove body, a fixed clamping apparatus, an elastic membrane, a sliding clamping apparatus and a sliding threaded rod; the elastic membrane is fixed on the fixed clamping apparatus and the sliding clamping apparatus; the fixed clamping apparatus is connected with the fixed threaded rod; the sliding clamping apparatus is connected with the sliding threaded rod; the fixed clamping apparatus, the elastic membrane and the sliding clamping apparatus are positioned in the groove body; the sliding threaded rod is connected with the stepper motor; andthe signal generator is connected with a metal electrode in the cell culture cavity. The stretch-electricity combinational stimulation cell culture device overcomes the disadvantage of incapacity of simulating a physical microenvironment in which internal cells are subject to stretching force and electric stimulation at the same time in the conventional method, establishes a cell culture method under the condition of combining stretching force stimulation with electricity stimulation, and promotes the development of cell and tissue culture methods and related tissue engineering reactors.

The invention discloses a porous silica nano particle loaded with medicaments with slight solubility. The nano particle has a nano composite structure of inorganic mesoporous silica / organic micelle / the medicaments with slight solubility, and the medicaments with slight solubility are wrapped in the organic micelle in porous channels of the inorganic mesoporous silica. According to the preparationmethod, the medicaments with slight solubility are loaded in situ and in a single step, and the carrier synthesis and medicament load are performed simultaneously, thereby remarkably improving the loading of the medicaments with slight solubility and simplifying the medicament loading way, wherein the total loading rate of the medicaments is higher than 80%, and the loading quantity of the medicaments is not lower than 1mg / g; the prepared nano particle has good dispersibility and high suspension stability, the size of the particle is less than 500nm and is adjustable, and the aperture of the nano particle ranges from 2nm to 30nm and is adjustable; the nano particle has the characteristics of pH-responsive releasing medicaments without subsequent modification; the preparation process is simple and can be implemented in a scale; and the nano particle can be applied to the preparation of anti-inflammation or anti-cancer medicinal preparations and has wide application prospect in the field of biomedicine.

The invention relates to a foaming agent used in composite-foam oil flooding. The foaming agent comprises materials of, by concentration: 0.2 to 0.4% of hydroxyl-sulfobetaine, 0.1% of 1227, 0.04 to 0.1% of dodecanol, and balance of formation water. The molecular formula of 1227 is C21H38NCl. The molecular formula of dodecanol is C12H26O. The foaming agent provided by the invention has a temperature resistance stabilized at 50 DEG C, and a good salt resistance of 80*10<3>mg / L. Foaming performance and foam stabilizing performance of the foaming agent are detected by using a Ross-mils method (a decanting method). The foaming height of the foaming agent is 14.4cm; the half-life period reaches 16 hours; and the oil-water interfacial tension is 0.192mN / m. According to the invention, advantages of chemical flooding and gas flooding are combined; viscose foam and gas are adopted as oil-flooding agents, such that double functions of profile modifying and oil flooding are achieved, and a defectof gas flooding of gas channeling is avoided. The foaming agent is suitable for oil reservoir with high water content, severe anisotropic, and cracks or large porous channels.

The invention belongs to the crossing field of inorganic chemistry, organic chemistry and material chemistry, and specifically relates to an isomorphic porous rare-earth metal-organic framework material, a preparation method and application thereof in natural gas storage, particularly methane storage. In the structural formula of the rare-earth metal-organic framework material as shown below, RE3+ is one of Sc3+, Y3+, Yb3+ or Lu3+, and X is one of H, NH2, F, Cl, Br or I. The material has high thermal stability, excellent porous channel structure and good natural gas storage property, thus being capable of being widely applied to the automobile energy field.